Let's see how this works; paraphrasing with the most common 'explanation'...
Then Jesus mother and brothers came to see Him, but they were unable to reach Him because of the crowd. He was told, Your mother and cousins are standing outside, wanting to see You. But He replied, My mother and cousins are those who hear the word of God and carry it out. (Luke 8:19-21)
While Jesus was still speaking to the crowds, His mother and cousins stood outside, wanting to speak to Him. (Matthew 12:46)
Then Jesus' mother and cousins came and stood outside. They sent someone in to summon Him, (Mark 3:31)
Isnt this the carpenters son? Isnt His mothers name Mary, and arent His cousins James, Joseph, Simon, and Judas? Arent all His sisters with us as well? Where then did this man get all these things? And they took offense at Him. But Jesus said to them, Only in his hometown and in his own household is a prophet without honor. (Matthew 13:55-57)
sisters = cousins; too???
OOps; I missed the first ‘brother’.
Once again, I presumed that what I posted was what I wanted to post.